Ionic Crystal Unit Cells
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
An ionic crystal's unit cell treats one ion's positions as the lattice and the other ion as filling the gaps it leaves.
Show
Sodium chloride's face-centered cubic cell contains four sodium ions and four chloride ions, keeping the required 1:1 ratio.
Watch for
An ionic cell's two ion counts must reduce to the compound's actual formula ratio, or the calculation has gone wrong.
Builds on
Unlocks
- Nothing yet depends on this.